Posted by **john** on Monday, December 6, 2010 at 10:25pm.

calculate the infinite sum of a geometric series with first term 15,000 and common ratio by (1-1/10)

- r=9/10? -
**MathMate**, Monday, December 6, 2010 at 11:40pm
If r=9/10, a0=15000, then

Σ1-∞ ai

=15,000/(1-r)

=150,000

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